Examples with MISSING_VARIABLE_IN_BODY org.kie.pmml.commons.Constants.MISSING_VARIABLE_IN_BODY used on opensource projects

Example 1 with MISSING_VARIABLE_IN_BODY

use of org.kie.pmml.commons.Constants.MISSING_VARIABLE_IN_BODY in project drools by kiegroup.

the class KiePMMLRegressionTableFactory method getPredictorTermBody.

/**
 * Add a <b>PredictorTerm</b> <code>MethodDeclaration</code> to the class
 * @param predictorTerm
 * @return
 */
static BlockStmt getPredictorTermBody(final PredictorTerm predictorTerm) {
    try {
        templateEvaluate = getFromFileName(KIE_PMML_EVALUATE_METHOD_TEMPLATE_JAVA);
        cloneEvaluate = templateEvaluate.clone();
        ClassOrInterfaceDeclaration evaluateTemplateClass = cloneEvaluate.getClassByName(KIE_PMML_EVALUATE_METHOD_TEMPLATE).orElseThrow(() -> new RuntimeException(MAIN_CLASS_NOT_FOUND));
        MethodDeclaration methodTemplate = evaluateTemplateClass.getMethodsByName("evaluatePredictor").get(0);
        final BlockStmt body = methodTemplate.getBody().orElseThrow(() -> new KiePMMLInternalException(String.format(MISSING_BODY_TEMPLATE, methodTemplate.getName())));
        VariableDeclarator variableDeclarator = getVariableDeclarator(body, "fieldRefs").orElseThrow(() -> new KiePMMLInternalException(String.format(MISSING_VARIABLE_IN_BODY, "fieldRefs", body)));
        final List<Expression> nodeList = predictorTerm.getFieldRefs().stream().map(fieldRef -> new StringLiteralExpr(fieldRef.getField().getValue())).collect(Collectors.toList());
        NodeList<Expression> expressions = NodeList.nodeList(nodeList);
        MethodCallExpr methodCallExpr = new MethodCallExpr(new NameExpr("Arrays"), "asList", expressions);
        variableDeclarator.setInitializer(methodCallExpr);
        variableDeclarator = getVariableDeclarator(body, COEFFICIENT).orElseThrow(() -> new KiePMMLInternalException(String.format(MISSING_VARIABLE_IN_BODY, COEFFICIENT, body)));
        variableDeclarator.setInitializer(String.valueOf(predictorTerm.getCoefficient().doubleValue()));
        return methodTemplate.getBody().orElseThrow(() -> new KiePMMLInternalException(String.format(MISSING_BODY_TEMPLATE, methodTemplate.getName())));
    } catch (Exception e) {
        throw new KiePMMLInternalException(String.format("Failed to add PredictorTerm %s", predictorTerm), e);
    }
}